Macbook Pro 13" Problem Charging

Discussion in 'MacBook Pro' started by penguintri, Oct 4, 2009.

  1. penguintri macrumors member

    Joined:
    Jun 30, 2009
    Location:
    UK
    #1
    I just did a battery recalibration last night on my Macbook pro 13" and now it won't charge to 100%. It reaches 99% then the time until full just slowly increases. The light on the charger stays red and doesn't change green so I am worried about overcharging and damaging the battery. I have installed coconutbattery to monitor the batteries charge levels and does not think it has reached its maximum capacity.

    However, when I unplug the ac adaptor the macbook changes to says it is at 100% and coconut battery changes to say it is at the maximum mAH. If i replug in the ac adaptor it goes straight back to 99% with coconutbattery also reporting it not fully charged. It still never hit 100% and charges continuously.

    I have tried resetting the SMC but that didn't help. Any help would be greatly appreciated.

    Cheers
     
  2. p3ncil macrumors regular

    Joined:
    Jul 6, 2009
    #2
    it's normal. once your battery hits above 90% it'll start to charge slower.
     
  3. penguintri thread starter macrumors member

    Joined:
    Jun 30, 2009
    Location:
    UK
    #3
    yea I know, it charges at the slower rate untill 99% then the time it says it has left just increases. It never changes green and hits 100%. But it says 100% if I unplug the ac adapter but goes straight back to 99% and charging if I plug it in again immediately. Im doing another battery calibration now to see if it fixes it.
     
  4. p3ncil macrumors regular

    Joined:
    Jul 6, 2009
    #4
    isn't that normal?
    since you are using your macbook and it's drain power off the battery and the wall outlet at the same time?
     
  5. zw-gator macrumors 6502a

    zw-gator

    Joined:
    Oct 23, 2005
    Location:
    Canada
    #5
    It's normal, and been covered on this forum at least 5x a week
     
  6. couto27 macrumors 6502

    Joined:
    Nov 10, 2008
    Location:
    lisboa,portugal
    #6
    make sure once a month at least make a full drain and leave it stand buy for 5 to.6 hours
    the battery is 99% , 98% is because the electrons like to travel

    -another thing ,dont use the mac without the battery is loses 33% performance
    -if you gone leave the mac without 1 or more months stop , leave at 50% battery charge

    also search in the forums before ask.
     
  7. penguintri thread starter macrumors member

    Joined:
    Jun 30, 2009
    Location:
    UK
    #7
    I did the battery recalibration last night full charge then all night discharged. It was after this that it started being weird. It was never like this before. I dont use the mac without the battery cant really take it out of the macbook pro.

    Im sure before I did this it used to say fully charged then, discharge to 95% then charge again to 100% not just sit on 99%/ The light on my ac adapter never goes green.

    its notdoing whats mentioned in this thread.

    http://forums.macrumors.com/showthread.php?t=797383&highlight=charging

    Mine never stops charging even though I know it should when it goes above 95% and being used. I thought it was supposed to stop charging as a method of battery protection.

    I can find no other threads with my issue!
     
  8. p3ncil macrumors regular

    Joined:
    Jul 6, 2009
    #8
    try this. once it's at 99%
    shut down your mac.
    leave the plug in.

    check back every 5 mins or so and see if it has turned green.
     
  9. mrsir2009 macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #9
    Once its on 99% sleep it or shut it down for an hour on the charger. On my school MB it only ever reaches 99% unless I do that :eek:
     
  10. penguintri thread starter macrumors member

    Joined:
    Jun 30, 2009
    Location:
    UK
    #10
    I switched it off with the battery stuck at 99% and still charging. I left it for two hours and the light didn't go green. When I switched it back on it still said 99% and its said 11mins until full for 30mins now.
     

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